import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.LinkedList;
import java.util.List;

import org.cloudbus.cloudsim.Cloudlet;
import org.cloudbus.cloudsim.CloudletSchedulerTimeShared;
import org.cloudbus.cloudsim.Datacenter;
import org.cloudbus.cloudsim.DatacenterBroker;
import org.cloudbus.cloudsim.DatacenterCharacteristics;
import org.cloudbus.cloudsim.Host;
import org.cloudbus.cloudsim.Log;
import org.cloudbus.cloudsim.Pe;
import org.cloudbus.cloudsim.Storage;
import org.cloudbus.cloudsim.UtilizationModel;
import org.cloudbus.cloudsim.UtilizationModelFull;
import org.cloudbus.cloudsim.Vm;
import org.cloudbus.cloudsim.VmAllocationPolicySimple;
import org.cloudbus.cloudsim.VmSchedulerTimeShared;
import org.cloudbus.cloudsim.core.CloudSim;
import org.cloudbus.cloudsim.provisioners.BwProvisioner;
import org.cloudbus.cloudsim.provisioners.BwProvisionerSimple;
import org.cloudbus.cloudsim.provisioners.PeProvisioner;
import org.cloudbus.cloudsim.provisioners.PeProvisionerSimple;
import org.cloudbus.cloudsim.provisioners.RamProvisioner;
import org.cloudbus.cloudsim.provisioners.RamProvisionerSimple;


public class CloudAssignment1 {
	/** The cloudlet list. */
	private static List<Cloudlet> cloudletList;

	/** The vmlist. */
	private static List<Vm> vmlist;
	public static void main(String []args)
	{
		Log.printLine("Starting cloud assignment....");
		try {
			// First step: Initialize the CloudSim package. It should be called
			// before creating any entities.
			int num_user = 1; // number of cloud users
			Calendar calendar = Calendar.getInstance();
			boolean trace_flag = false; // mean trace events

			// Initialize the CloudSim library
			CloudSim.init(num_user, calendar, trace_flag);

			// Second step: Create Datacenters
			// Datacenters are the resource providers in CloudSim. We need at
			// list one of them to run a CloudSim simulation
			Datacenter datacenter0 = createDataCenter("Datacenter_0");
			System.out.println(datacenter0.getHostList().get(1).getTotalMips());
			// Third step: Create Broker
			DatacenterBroker broker = createBroker();
			int brokerId = broker.getId();

			// Fourth step: Create one virtual machine
			vmlist = new ArrayList<Vm>();

			// VM description
			
			int vmid = 0;
			int mips = 100;
			long size = 10000; // image size (MB)
			int ram = 512; // vm memory (MB)
			long bw = 1000;
			int pesNumber = 1; // number of cpus
			String vmm = "Xen"; // VMM name
			
			// create VM
			Vm vm = new Vm(vmid, brokerId, mips, pesNumber, ram, bw, size, vmm, new CloudletSchedulerTimeShared());
		
			// add the VM to the vmList
			vmlist.add(vm);
			
			// submit vm list to the broker	
			broker.submitVmList(vmlist);

			// Fifth step: Create one Cloudlet
			cloudletList = new ArrayList<Cloudlet>();

			// Cloudlet properties
			int id = 0;
			long length = 400000;
			long fileSize = 300;
			long outputSize = 300;
			long minMemory=1000;
			long minStorage=10000;
			long deadline=400;
			UtilizationModel utilizationModel = new UtilizationModelFull();
			CustomCloudlet cloudlet=new CustomCloudlet(id, length, pesNumber, fileSize, outputSize, utilizationModel, utilizationModel, utilizationModel, minMemory, minStorage, deadline);
			cloudlet.setUserId(brokerId);
			cloudlet.setVmId(vmid);

			// add the cloudlet to the list
			cloudletList.add(cloudlet);

			// submit cloudlet list to the broker
			broker.submitCloudletList(cloudletList);

			// Sixth step: Starts the simulation
			CloudSim.startSimulation();

			
			CloudSim.stopSimulation();

			//Final step: Print results when simulation is over
			List<Cloudlet> newList = broker.getCloudletReceivedList();
			printCloudletList(newList);

			Log.printLine("CloudSimExample1 finished!");
		} catch (Exception e) {
			e.printStackTrace();
			Log.printLine("Unwanted errors happen");
		}
		
	}
	private static Datacenter createDataCenter(String centerName)
	{
		//create list of host belongs to data center
		List<Host> listHost=new ArrayList<Host>();
		// then create list of cpu belongs to each host
		List<Pe> listPe=new ArrayList<Pe>();
		//each CPU capacity is 10000 MIPS
		int mips=10000;
		//assignment requires each host has 8 cores, so add 8 cpu cores into the listPe
		for(int i=0;i<8;i++)
		{
			listPe.add(new Pe(i, new PeProvisionerSimple(mips) ));
			
			
		}
		//now create 500 host
		for(int i=0;i<500;i++)
		{
			int hostId = i;
			int ram = 65000; // host memory (MB)
			long storage = 10000000; // host storage
			int bw = 10000;
			listHost.add(new Host(hostId, new RamProvisionerSimple(ram), new BwProvisionerSimple(bw) , storage, listPe, new VmSchedulerTimeShared(listPe)));
		}
		
		//Create a DatacenterCharacteristics object that stores the
				// properties of a data center: architecture, OS, list of
				// Machines, allocation policy: time- or space-shared, time zone
				// and its price (G$/Pe time unit).
				String arch = "x86"; // system architecture
				String os = "Linux"; // operating system
				String vmm = "Xen";
				double time_zone = 10.0; // time zone this resource located
				double cost = 3.0; // the cost of using processing in this resource
				double costPerMem = 0.05; // the cost of using memory in this resource
				double costPerStorage = 0.001; // the cost of using storage in this
												// resource
				double costPerBw = 0.0; // the cost of using bw in this resource
				LinkedList<Storage> storageList = new LinkedList<Storage>(); // we are not adding SAN
															// devices by now

				DatacenterCharacteristics characteristics = new DatacenterCharacteristics(
						arch, os, vmm, listHost, time_zone, cost, costPerMem,
						costPerStorage, costPerBw);

				// 6. Finally, we need to create a PowerDatacenter object.
				Datacenter datacenter = null;
				try {
					datacenter = new Datacenter(centerName, characteristics, new VmAllocationPolicySimple(listHost
							), storageList, 0);
				} catch (Exception e) {
					e.printStackTrace();
				}
		
		//Datacenter dataCenter=new Datacenter(centerName, characteristics, vmAllocationPolicy, storageList, schedulingInterval)
	return datacenter;
	}
	private static DatacenterBroker createBroker() {
		DatacenterBroker broker = null;
		try {
			broker = new DatacenterBroker("Broker");
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
		return broker;
	}

	/**
	 * Prints the Cloudlet objects.
	 *
	 * @param list list of Cloudlets
	 */
	private static void printCloudletList(List<Cloudlet> list) {
		int size = list.size();
		Cloudlet cloudlet;

		String indent = "    ";
		Log.printLine();
		Log.printLine("========== OUTPUT ==========");
		Log.printLine("Cloudlet ID" + indent + "STATUS" + indent
				+ "Data center ID" + indent + "VM ID" + indent + "Time" + indent
				+ "Start Time" + indent + "Finish Time");

		DecimalFormat dft = new DecimalFormat("###.##");
		for (int i = 0; i < size; i++) {
			cloudlet = list.get(i);
			Log.print(indent + cloudlet.getCloudletId() + indent + indent);

			if (cloudlet.getCloudletStatus() == Cloudlet.SUCCESS) {
				Log.print("SUCCESS");

				Log.printLine(indent + indent + cloudlet.getResourceId()
						+ indent + indent + indent + cloudlet.getVmId()
						+ indent + indent
						+ dft.format(cloudlet.getActualCPUTime()) + indent
						+ indent + dft.format(cloudlet.getExecStartTime())
						+ indent + indent
						+ dft.format(cloudlet.getFinishTime()));
			}
		}
	}

}
